Solver "loqo" is based on LOQO, an interior-point code for linear and convex nonlinear optimization problems by Prof. Robert Vanderbei ORFE Building, Room 106 Princeton University Princeton NJ 08544 Tel: 609-258-2345 rvdb@princeton.edu http://www.princeton.edu/~rvdb/ Contact him for details on getting the LOQO source. Source file aloqo.c is an AMPL driver for LOQO. (To avoid any confustion with LOQO source file loqo.c, the driver is "aloqo.c" rather than the more logical "loqo.c".) The makefile assumes the LOQO objects are in library libloqo.a; file lp.h is part of the LOQO source. See pointers under "LOQO" in http://www.princeton.edu/~rvdb/ . For a summary of using solver "loqo", execute loqo '-?'